You can’t change London’s water. You can change your shower.
Hair like straw since you moved? It’s the water — and you can filter it. Screws onto the hose you already have, hand-tight. Your deposit’s safe. Two for £44.95, 60 days to decide.
days
If London water still wins, we refund you. 60 days from the day it arrives. Prepaid return label, full refund of the product price. No forms, no hassle.
Questions
Does it soften my water?
No — and nothing that screws onto a hose can. Limescale comes from minerals that only a whole-house softener removes. What it does: PP cotton catches grit and rust, activated carbon is there for chlorine.
Will it fit my shower?
If your current head unscrews by hand from the hose, yes. It fits mixer, combi and power showers with the standard UK ½" hose. It is not suitable for electric showers (the white box with a dial on the wall).
I rent. Do I need my landlord's permission?
No. No drilling, no tools, nothing touches the plumbing. It screws onto the hose you already have, and you put the original head back when you move out. Your deposit’s safe.
Will it lower my water pressure?
How strong it feels depends on your home’s pressure, so we won’t promise it goes up. On mixer and combi showers most people won’t notice a difference. If you don’t like how it feels, you have 60 days to send it back.
How often do I change the cartridge?
Roughly every 60 days of daily use. Refills come in packs of 3 for £14.99. You’ll see when it needs changing — the cotton gets visibly dirty.
See it in 30 seconds.
No plumber, no landlord, and it moves with you. Tap a video for sound.
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Which one sounds like you?
Your hair hasn’t been the same since you moved.
You moved for a job, a relationship, a city you wanted to try. Nobody mentioned the water. A few months in, the kettle’s furred up, there’s limescale on the shower screen, and your hair feels like straw. Then you go home for a weekend and it comes back. It’s the water. You can’t change what comes out of the tap. You can filter what comes out of the shower.
- One thing to change — not another £30 shampoo
- No plumber, no landlord conversation, no deposit at risk
- 60 days to decide in your own shower
Hand-tight on the hose you already have.
A whole-house softener is £1,000+, needs a plumber, needs the landlord to sign it off, and you can’t make it pay in a 12-month tenancy anyway. KLAROVAI unscrews with your hand onto the hose you already have. When you move out: put the original head back, take KLAROVAI to the next flat. Your deposit’s safe.
- UK ½-inch standard, fits mixer, combi and power showers
- No plumber, no landlord, no tools
- Take it with you when you move
New shampoo. New mask. New hairdresser. Same water.
If you’re at your wit’s end and you’ve changed everything except the one thing you shower in every day, this is the missing piece. The whole shower goes through the cartridge in the handle — not just a jug at the end. We won’t promise what it does to your hair. We’ll give you 60 days to find out.
- The whole wash, not just the final rinse
- Activated carbon stage — the same media as many jug filters
- Fresh cartridge every 60 days of daily use
Less chlorine in the water that hits your rinse.
The activated carbon stage is designed to reduce chlorine before the water reaches you. We won’t promise it protects your colour or stretches your salon appointments — we don’t have the lab test for that yet. We will promise 60 days to tell us whether you noticed the difference.
- Carbon stage designed to reduce chlorine
- Gentle mist mode for coloured hair
- 60 days to decide for yourself
Safe to drink. That doesn’t mean it’s kind to hair.
London’s water runs through chalk, which makes it hard, and it’s treated with chlorine to keep it safe. You can’t change what comes out of the tap. Here’s what changes when it reaches your shower — and what a filter in the handle can and can’t do about it.
Added by law to keep tap water safe. The activated carbon stage is designed to reduce it before the water reaches you.
Fine particles travel through older London pipework. The PP cotton layer catches them — you'll see it darken.
No shower head of any brand softens hard water. Only a plumbed-in whole-house softener removes calcium and magnesium.
Source: Drinking Water Inspectorate, Chief Inspector's report 2024.
Two filter stages. No electrics, no app.
A replaceable cartridge sits inside the handle. Every drop goes through it before it reaches you.
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Sediment stage (PP cotton)
- Mechanically traps rust particles, pipe sediment and visible debris
- You'll see this layer darken through the window on the handle
Honest bit: That darkening is the filter working — proof you can see in your own bathroom.
Chlorine stage (activated carbon)
- The same material used in many drinking-water filter jugs
- Designed to reduce the free chlorine your water company adds
Honest bit: Composition declared by the manufacturer. Our own independent lab test is commissioned — the report goes here when it's ready.
The window on the handle
- See the cartridge from outside
- Swap it in seconds, no tools
Honest bit: When the sediment layer is noticeably brown, it's done its job — time for a fresh one.
The spray you want. The pause you’ll use.
Twist to switch between rainfall, mixed and mist. Press the button to stop the water while you lather — press again to carry on at the same temperature.
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Rainfall
The widest spray. Good for rinsing out shampoo in one pass.
Mixed
Rainfall and mist together. A fuller-feeling spray for everyday use.
Mist
The gentlest. A soft, fine spray for colour-treated hair or a slower rinse.
Pause button
Press to stop the water while you soap up. Press again to carry on at the same temperature.
What it costs to keep it going.
Facts about refills — not survey percentages.
About 60 days of daily use. You'll see it darken through the window.
Covers 6 months. Buy them when you need them.
Two 3-packs. Less than one month of the products you’ve already tried.
Nothing recurring is added to your order. Ever.
What the cartridge is designed to catch.
London's water runs through chalk, which makes it hard, and it's treated with chlorine to keep it safe. We can't change the hardness — nothing on a shower hose can. Here's what the cartridge is built for.
Source: Drinking Water Inspectorate, Chief Inspector's report 2024. Check your area's hardness with your water supplier.
Half the price of the big brands. Twice the price of the Amazon one. Here’s why.
 KLAROVAI (2-pack) | Amazon £15 one | Whole-house softener | Another shampoo | |
|---|---|---|---|---|
| Replaceable filter cartridge | Sometimes | n/a | ||
| Window to see the cartridge | n/a | |||
| Softens hard water | Honestly, no | Claims to | ||
| No plumber, no landlord | ||||
| Upfront cost | £44.95 for 2 | ~£15–27 for 1 | £1,000+ fitted | £30 a month |
| 60-day money-back from delivery | 30-day Amazon return | n/a | n/a |
We’re new. Here’s what that means.
We can’t show you 500 reviews, because we don’t have them yet — and we’re not inventing any. What we can do instead:
- Every review you’ll ever see here will be from a verified UK customer. If it can’t be verified, it comes down.
- No fake ‘was’ prices, no countdowns, no claims we can’t back. £44.95 is the price — we don’t inflate it to discount it.
- 60 days from the day it arrives. Prepaid return, full refund of the product price. No asterisk.
- No subscription. Refills when you want them, 3 for £14.99.
What renters say after 60 days.
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DAY 01
DAY 30I stopped reaching for body lotion the second I got out
My skin used to feel tight the moment I stepped out of the shower, especially in winter. Three weeks in, it just doesn’t. Same water, same shower gel, but that pulled, papery feeling afterwards has gone.
The pool smell in a hot shower has gone
I’m not going to say it changed my life, but the chlorine smell you get with a hot shower in our flat has disappeared, and my legs aren’t dry and scratchy by the afternoon any more. Fitted in ten minutes with a tea towel for grip.
Honest about what it does, and it does that
Bought it because they said upfront it wouldn’t soften the water. It doesn’t. What it does do is stop that itchy, tight feeling on my arms after every shower. The cartridge was brown after five weeks, which was a bit grim but weirdly reassuring.
DAY 01
DAY 30Noticeably less frizz since switching
Moved down south two years ago and my hair has been a frizzy disaster area ever since, no matter how much conditioning I threw at it. I’d been doing a final rinse with a jug from the Brita. This does the same thing for the whole shower and I’ve binned the jug.
DAY 01
DAY 28The frizz is calmer by the end of the day
By 5pm my hair used to look like I’d never brushed it. It still isn’t poker straight (it’s curly, it never will be) but it sits where I put it now and I’ve stopped tying it back out of embarrassment.
DAY 01
DAY 14My hair finally feels properly rinsed
My hair never felt clean here, even straight after washing. First shower with this it rinsed properly and didn’t feel coated. Pressure held up fine on our combi, which was the thing I was worried about.
My colour lasts longer between appointments
I get my blonde done every eight weeks and it was going flat and brassy by week four. Since fitting this I’m going longer between appointments and using far fewer clarifying washes. I can’t say it’s the filter alone, but it’s the only thing I changed.
My blonde is staying brighter between appointments
Nothing dramatic, just noticeably less dull by week five. I liked that they said it doesn’t soften the water — that’s exactly why I trusted it over the ones on Amazon that promise everything.
Fewer clarifying washes, which my colour prefers
I was stripping my colour with detox shampoo every fortnight to get rid of the build-up. Down to once a month now. Mist mode is lovely on freshly dyed hair.
Pressure is actually fine, mist mode is great
I read every review complaining about pressure before buying. On our mixer shower it’s honestly no different, and mist mode feels stronger if anything. The pause button while you soap up is the thing I didn’t know I needed.
Held up better than I expected on a gravity system
Old house, gravity-fed tank, so I expected a dribble. It’s fine on rainfall, slightly softer on mist. Fitted in five minutes, no leaks after a couple of turns of the tape they include.
The pause button is the bit I use most
Renting, so I couldn’t touch the plumbing. Screwed on by hand and it comes with me when I move. The pause button saves a surprising amount of water, and the state of the cartridge after six weeks was convincing.
Every review shown here is from a verified UK customer, in their own words. If it can't be verified, it comes down.
On your hose in about a minute.
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Unscrew the old head
By hand. A tea towel for grip if it’s stiff. No plumber, no landlord, no deposit at risk.
Wrap the tape, screw this one on
One layer of the included PTFE tape around the hose thread, then hand-tight. Standard UK ½" hose. About as hard as opening a jar.
Run it for a minute
To flush the cartridge the first time. Done. When you move out, put the original head back and take KLAROVAI with you.
What it does. And what it doesn’t.
- It won’t soften your water or remove limescale. Nothing that screws onto a hose can.
- It won’t treat eczema, dermatitis or any skin or scalp condition.
- It won’t promise "advert hair". You get 60 days to judge for yourself.
- Catches sediment and rust particles your pipes send down.
- Runs the whole shower through an activated carbon stage designed to reduce chlorine — not just a jug at the end.
- Fits by hand and comes with you when you move.
The options when you rent.
| Cost | Needs a plumber? | Moves with you? | |
|---|---|---|---|
| Whole-house water softener | Over £1,000 | ||
| Another shampoo or mask | Every month | — | |
| Rinsing with a jug | Every shower | — | |
 KLAROVAI | £44.95 for two |
Made for rented bathrooms in London.
- You rent and can’t touch the plumbing
- Your hair hasn’t been the same since you moved, and you’re tired of buying products
- You have a mixer, combi or power shower
- You want to take it with you to the next flat
- You have an electric shower (the white box with a dial)
- You want softer water — that needs a whole-house softener
- You expect a miracle in one shower
From your basket to your shower.
You order. Free UK tracked delivery, 7–12 working days.
Unscrew the old head, screw this one on. By hand.
Check the cartridge. What it catches, you can see.
Keep it — or send it back with our prepaid label.
FAQ
The questions you’d ask us if we were in the same room. A real person replies within one working day: klarovai.support@gmail.com
Is there a subscription?
No. Nothing recurring is added to your order. Refill cartridges are sold separately when you need them: 3 for £14.99, about 6 months for one shower.
What’s in the box?
1 shower head: shower head with cartridge fitted, 1 spare cartridge, hose, wall holder, PTFE tape and instructions.
2 shower heads: 2 shower heads with cartridges fitted, 2 spare cartridges, 2 hoses, wall holder, PTFE tape and instructions.
2 shower heads + 6 cartridges: everything in the 2-head pack plus 6 extra cartridges.
What does the filter actually do?
Two things. The PP cotton layer catches sediment and rust particles — you’ll see it darken. The activated carbon stage is designed to reduce chlorine. We won’t quote a percentage until our own lab test on this exact cartridge is published.
Are there independent test results?
Not yet. We’ve commissioned an independent lab test on this exact cartridge. We’ll publish the report on this page when it’s ready — until then we won’t quote any percentages.
Will it change my hair or skin?
We can’t promise that. Hair and skin depend on many things, and water is only one of them. That’s exactly why you get 60 days to judge it in your own shower.
How do I install it?
Unscrew the shower head you have now, by hand (a tea towel for grip if it’s stiff). Wrap one layer of the included PTFE tape around the hose thread. Screw KLAROVAI on, hand-tight. Run the water for a minute to flush the cartridge. Done.
How long does delivery take?
Free UK tracked delivery. We prepare your order within 1–2 working days and it arrives 7–12 working days from the day you order. UK only.
How do returns work?
Within 60 days of delivery, email klarovai.support@gmail.com and we’ll send a prepaid return label. You get a full refund of the product price. You also keep your 14-day legal right to cancel.
Why is it cheaper than the big filtered shower head brands?
We sell direct, keep the design simple and tell you exactly what it does and doesn’t do. We don’t inflate the price to discount it.
Can’t change the water? Change the shower.
Two filtered shower heads for £44.95, free UK delivery, 60 days in your own bathroom. If London water still wins, we refund you.
Not for electric showers · Prepaid return within 60 days · No subscription